Check the listing for details. RG187-A/U TEFLON 75 ohm Silver Plated PTFE Coax strand PLATED $ PER 25FT SECTION. Color: White, Condition: New. Listed at 29.00 USD. rg187a/uHello Ebayers , up for buy it now is a coax cable RG187a/u Made by Thermax Corp. Flushing, New York USA made cable , 75 ohm mini coax teflon jacketed silver plated copper , you are potentially purchasing 25 ft sections , which means you must buy at least 25ft but if you buy more we will sell it in additional 25ft sections , example if you buy 4 sections that would be equivalent to 100 ft = $ 116 and if you buy at least 4 sections we will not only keep it continuous, but we will put it on a small spool as well , you are paying 29 dollars per 25ft section with free economy shipping , so sorry we don't know part number from Thermax the maker of the coax , but it is 2.5mm o.d. 1.5mm center dielectric diam stranded center the jacket appears to have a twist to it (if you look at it carefully) like a teflon wrap. thanks and please feel free to message us if you have questions